213020542 has 12 divisors (see below), whose sum is σ = 371699280. Its totient is φ = 91294476.

The previous prime is 213020531. The next prime is 213020551. The reversal of 213020542 is 245020312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1086742 + ... + 1086937.

It is an arithmetic number, because the mean of its divisors is an integer number (30974940).

Almost surely, 2^213020542 is an apocalyptic number.

213020542 is a deficient number, since it is larger than the sum of its proper divisors (158678738).

213020542 is a wasteful number, since it uses less digits than its factorization.

213020542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173695 (or 2173688 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 213020542 is about 14595.2232596833. The cubic root of 213020542 is about 597.2284599143.

Adding to 213020542 its reverse (245020312), we get a palindrome (458040854).

The spelling of 213020542 in words is "two hundred thirteen million, twenty thousand, five hundred forty-two".